Electrostatics – Van de Graaff Generator
Van de Graaff Generator, High Voltage
SE-8691
A Large Sphere Creates Higher Voltage
A Sparks up to 35 cm in Length
A Large Size Ideal for Demonstrations
The High Voltage Van de Graaff Generator features a 25 cm diameter
sphere which can generate approximately 400,000 Volts. The size of the
sphere, the rounded edges of the sphere and the height of the sphere
from the demonstration table contribute to the high voltages generated.
Its large size, long sparks and high voltages make it ideal for use in larger
rooms or lecture halls. An extra belt is included.
Electric Plume
Dimensions:
Sphere
diameter: 25 cm
Overall height: 74 cm
SE-7232
The lightweight ribbons are
connected to a stand which
rests on top of the Van de
Graaff Generator. As the
generator operates, the ribbons stand on end due to
the repulsive force between
their like charges.
Discharge Sphere
Electric Whirl
SE-7231
SE-7233
Van de Graaff
Replacement Belt
Order Information:
Replacement Belt......................................... SE-7355
Order Information:
Van de Graaff Generator,
High Voltage........................................................ SE-8691
Electric Plume.................................................... SE-7232
This 25 cm sphere is supported on a Lucite
column with a cast iron base. Includes
cabling for connection to the Van de Graaff
Generator or to a ground.
248
When held near the sphere of the
generator, the spokes are propelled by
charge leaving the points.
Discharge Sphere.......................................... SE-7231
Electric Whirl. ...................................................... SE-7233
Replacement Supplies:
Replacement Belt.......................................... SE-7355
www.pasco.com
Electrostatics – Charge
Classic Electrostatics
Materials Kit
SF-9068
Providing the classic introduction to
electrostatics, this kit allows students to
rub any of the three rods with rubbing cloths
to produce a positive or negative charge.
Place the rods on the insulated pivot stands
to investigate electrostatic forces.
Includes:
Three rods (acrylic, glass, PVC)
Discover Charge Set
ES-8086
A Explore the Bipolar Nature of Charge
A Experimentally Rank Materials within the Triboelectric Series
The Discover Charge Set provides students with a collection of materials to explore
the nature of static charge. By rubbing two sheets of material together, electrons are
transferred from one material to the other. Students then hold each of the charged
materials near a charged indicator to discover the direction of charge flow. Using this
information, the materials can be ranked within the triboelectric series by rubbing with
each of the materials in the set.
Two insulated pivot stands
Three rubbing cloths (wool, silk, fur)
Negatively charged tape is used
as an indicator to verify the
material’s charge.
Order Information:
Classic Electrostatics
Materials Kit...................................................... SF-9068
Electroscope
SF-9069
When this Electroscope is charged, the
conductive rod rotates to indicate charge
magnitude. The shield ring is 15 cm in
diameter and can be grounded with banana
plug connectors (not included).
Rub two sheets together to transfer
charge from one sheet to the other.
Includes:
Charge Sampler: For transferring charge to
the Electroscope
Capacitor Plates (5.6 cm dia.): For testing
charges without depositing them on the
Electroscope
Included Materials:
Teflon
Styrene
Polyester
Wool
PVC
Each material sheet measures
15 cm x 10 cm.
Order Information:
Order Information:
Electroscope...................................................... SF-9069
Discover Charge Set. ............................................................................................................................................. ES-8086
249
Electrostatics – Electrostatics Systems
Basic Electrostatics System
ES-9080A
A Quantitative Electrostatics
A C
omprehensive Experiment
Manual Included
A Individual or Demonstration Use
The PASCO Basic
Electrostatics System
includes all the
components necessary
for a quantitative
investigation into the
basics of electrostatics.
With this integrated set
of equipment, students
can study:
A Production of charges,
equal and opposite
A Charge by induction
A Principle of the Faraday Ice Pail
A Charge transfer
A Charge distribution in electric fields
A Capacitors and the Q=CV relationship
Includes:
A Moving charges and current
ES-9078 Basic Electrometer
ES-9061 Conductive Shapes
Order Information:
ES-9057C Charge Producers and
Proof Plane
ES-9079 Basic Variable Capacitor
Basic Electrostatics Systems. .......................................... ES-9080A
Recommended:
Charge, Equipotential and Field Mapper.......... ES-9060
Basic Electrometer
ES-9078
p. 252
ES-9042A Faraday Ice Pail and Shield
ES-9077 Electrostatics Voltage
Source
ES-9059C Conductive Spheres, 13 cm
Experiment Manual
Quantitative Readout
Readout in volts can be calibrated
for units of charge.
The PASCO Basic Electrometer is a quantitative
electroscope, measuring the polarity and
magnitude of charged objects. With almost
infinite input resistance (1014 ohm), the
Electrometer is a high impedance
voltmeter, draining almost no charge
from the object it is measuring.
3, 10, 30 and 100 VDC Switch-Selectable
Ranges. LED lamps indicate the range in use.
Zeroing Switch. For removing all charge from
the input and bringing the meter to zero.
Automatic Shutoff. Unit turns off about
three hours after being used.
Direct Polarity Indication
Output Compatible with ScienceWorkshop
Interfaces. For recording data or producing a
demonstration-sized meter display.
Centered zero scale shows both
positive and negative charges.
Battery Operation. Uses four “AA” cells
(included). Range indicator lights flash
when batteries need to be replaced.
Signal Output
To computer interface.
Range Indicator
LEDs
Connector for
Shielded Input
Cable
Range Adjustment
Switch
Adjust the sensitivity to
match the experiment.
Grounding Jack
On/Off Switch
250
Features
Center-Zero Meter. Polarity is indicated
directly.
Zero Button
Included Cables. Shielded input cable for
connecting the Electrometer to the Faraday
Ice Pail or other source of charge; grounding
cable with clip; ScienceWorkshop interface
cable.
Instruction and Experiment Manual.
Order Information:
Basic Electrometer.................................... ES-9078
www.pasco.com
Electrostatics – Electrostatics Systems
Charge Producers and
Proof Plane Use the ball end
Conductive Spheres
Conductive Shapes
ES-9059C
ES-9061
ES-9057C
to sample
inside the
The Charge
hollow
Producers create
sphere.
equal positive and
negative charges
when rubbed
together. The Proof
Plane samples the
charge density from a charged object. The
charge can then be measured using the
Electrometer and Faraday Ice Pail.
Order Information:
Charge Producers and
Proof Plane......................................................ES-9057C
Electrostatics
Voltage
Source
ES-9077
30 cm
high
These Conductive Spheres (two per set)
can be used to store charge or investigate
the charge distribution on one or two
spherical conductors. A terminal on the
bottom of each sphere provides a con­
nec­tion point for the power supply. Each
sphere is attached to a heavy base (for
stability) with an insulating rod. The spheres
are 13 cm in diameter and 30 cm high.
Order Information:
Conductive Spheres............................ES-9059C
Basic Variable Capacitor
ES-9079
Specifications
Output: 30, 1000, 2000, 3000 VDC ±3%,
line regulated
Resistance in Series with Output:
120 MΩ/kV
Operating Voltage: 115/220, 50/60 Hz
AC Adapter: 9 VDC
This set includes a conductive sphere with
a hole in it: Demonstrate that static charge
resides the outside surface of a conductive
sphere by sampling the inside surface with
the ball end of the proof plane (ES-9057C,
shown at left).
Also included is an oblong shape for
demonstrating the difference in charge
densities on a large-radius surface versus a
small-radius surface. The whole surface is
at the same potential and students seem
surprised to find that the charge density is
greater on the smaller end.
Order Information:
Conductive Shapes. .............................ES-9061
Faraday Ice Pail
and Shield
This compact unit is ideal for performing
experiments in electrostatics. It may be
used as a source of charge or to maintain
an object at a constant potential. Since
the current required for such applications
is small (on the order of nanoamps), high
megohm resistors (120 MΩ per kV) are
placed in series with each output.
Output voltages are 1000, 2000 and
3000 VDC, allowing students to make
quantitative investigations of how voltage
affects charge density on spheres, capacitor
plates, etc. A 30 VDC source is also
provided for experiments with capacitors.
Banana plug to spade lug connecting cables
are included.
30 cm
high
ES-9042A
This variable, parallel plate capacitor permits
a quantitative investigation of the Q=CV
relationship. Two 18 cm diameter plates
allow the capacitance to be varied from
225 pF to zero by sliding the movable plate
in its 28 cm long track. The sliding plate
has adjustment screws to make the plates
parallel to each other. Electrical connection
studs are located on each plate.
A BNC connector cable is provided for
connection to an Electrometer.
Order Information:
Order Information:
Electrostatics Voltage
Source...................................................................ES-9077
Basic Variable
Capacitor............................................................ES-9079
With the Faraday Ice Pail, students can use
the Electrometer to measure charge as well
as potential. Touch the Proof Plane to the
point of interest on the charged body, then
place the Proof Plane inside the ice pail.
The Electrometer reading will be directly
proportional to the charge on the Proof
Plane.
The Faraday Ice Pail is 10 cm in diameter
and 15 cm deep. It is made of wire mesh,
so it is easy to see what is going on inside.
The outside shield has a diameter of 15 cm.
Order Information:
Faraday Ice Pail..........................................ES-9042A
251
Electrostatics – Charge/Field Mapping
Charge, Equipotential
and Field Mapper
Field Mapper Kit
ES-9060
Conductive Paper
PK-9023
Cork Surface
Use pushpins to hold the paper during
the experiment.
Printed grid makes
measurements easy.
The Charge, Equipotential and Field
Mapper is an excellent addition to the
Basic Electrostatics System.
Draw any set of two-dimensional
conductors with the conductive ink.
Investigate the electric field and the
equipotential field lines between and
around the conductive paper to any shape.
Charge it and investigate the distribution of
charge on its surface.
Similar to the PK-9023 Field Mapper Kit,
except it includes elec­trom­e­ter probes, a
“point charge” holder and larger sheets of
con­duc­tive paper for in­ves­ti­gat­ing charge
dis­tri­bu­tions on con­duc­tive surfaces.
Includes:
Conductive paper for mapping charge
distributions; 30 x 45 cm (50 sheets)
Conductive paper with cm grid for mapping
equipotentials and field gradients;
23 x 30 cm (100 sheets)
Storage Tray
With this kit students can map both the
potentials and the electric fields around any
conceivable system of two-dimensional
charged conductors.
The procedure is simple:
1. Draw any Electrode: Draw the electrode
with the special, conductive silver ink pen.
It is easy to use, dries quickly and there is
no mess.
2. Plot the Equipotentials: Connect a battery
or power supply across the electrodes,
then use a voltmeter to locate the equi­po­
ten­tial lines.
Conductive ink pen and a circular template
for drawing conductors
“Point charge” holder
Includes:
Plastic tray with corkboard top;
32 x 48 cm
Manual with 13 experiments
Order Information:
Charge, Equipotential
and Field Mapper....................................ES-9060
Replacement Supplies:
Conductive Ink Pen...............................PK-9031B
(limited shelf life of six months;
pen is not refillable)
Conductive Paper with grid
(50 sheets, 23 x 30 cm)....................PK-9025
Conductive Paper (no grid)
(100 sheets, 30 x 43 cm). ...............PK-9026
252
Draw any shaped charge electrode with
this conductive ink pen.
How it Works
3. Plot the Electric Field: Tape voltmeter
probes together, then hold one probe
on the paper and rotate the other probe
around it like a compass. The maximum
voltage reading indicates the direction of
the electric field.
Pushpins (10), connecting wire (1)
and
electrometer probes (2)
Conductive Pen
After the lab, everything stores
neatly under the corkboard.
Conductive paper with cm grid;
23 x 30 cm (50 sheets)
10 pushpins; three wires
Conductive ink pen and circular template
Plastic tray with corkboard top;
32 x 48 cm
Instruction manual with 10 experiments
Special Conductive
Ink Pen
The PASCO Con­duc­tive Silver Ink Pen makes
it easy to study field patterns. Draw over 60
meters of patterns with a single pen. Pen
shelf life is six months. Not refillable.
Order Information:
Conductive Ink Pen. .............................PK-9031B
Typical
Experiments
1.
2.
3.
4.
Dipoles of Like Charges
Dipoles of Opposite Charges
Parallel Plate Capacitor
Point Source and Guard Ring
(cylindrical capacitor)
5. Floating Electrode
Plus five more experiments.
Check out the experiments
at www.pasco.com
Order Information:
Field Mapper Kit. .............. PK-9023
Required:
Basic Digital
Multimeter................................ SE-9786A p. 281
(or any voltmeter with at
least a 10 M Ω input impedance)
Power Supply........................ SE-8587
(or another low voltage
DC power supply or battery)
p. 279
Replacement Supplies:
Conductive Ink Pen......................... PK-9031B
(limited shelf life of 6 months;
not refillable)
Conductive Paper with grid
(50 sheets, 23 x 30 cm).............. PK-9025
Conductive Paper (no grid)
(100 sheets, 30 x 43 cm). ......... PK-9026
www.pasco.com
Electrostatics – Circuits
Charge/Discharge Circuit
Relay
EM-8678
CI-6462
The Charge/Discharge Circuit offers a unique way to observe and measure the behavior
of DC circuits including batteries, capacitors, light bulbs and resistors. It also includes an
open slot to allow a component of choice to be inserted for further experimentation.
A Single-Pole Double-Throw Switch
Experiment Example
A A
ctivated by DataStudio or
Xplorer GLX
A For Sense and Control Projects
Charge the capacitor using batteries,
then discharge through a resistor or light
bulb. Students measure the voltage and
current as the capacitor discharges, and
can graph the relationship between voltage and current for various components.
See complete experiment on page 384.
Voltage vs. Current for a 33 Ω resistor, a
10 Ω resistor, and a light bulb. Note the
non-linearity for the bulb.
1F Capacitor
Light Bulbs
Batteries (not
included)
Resistors
This relay is a single-pole double-throw
switch that is controlled by DataStudio
or the Xplorer GLX for Sense and Control
experiments. It is shown here with the
EM-8678 Charge/Discharge Circuit, automatically turning on the light whenever the
temperature above the bulb reads less
than 25 °C.
Charge/Discharge Switch
Use your own rechargeable batteries
to investigate the efficiency of energy
storage and recovery.
The area under the power versus time graph is
energy. 99 J of energy is delivered to the battery.
During discharge, 51 J (52%) is delivered to the bulb.
Includes:
1 Farad Capacitor
#14 Light Bulbs (3)
10 Ω Resistor
33 Ω Resistor
100 Ω Resistor
Battery Holders
(uses AA or AAA)
Double Throw Knife
Switch
The Relay is controlled through the
Xplorer GLX calculator:
The statement above means that the Relay is switched
on and the light comes on when the temperature probe
in port #1 of temperature sensor #1 reads
below 25 °C.
Instruction Manual
Order Information:
Charge/Discharge Circuit.......................................................... EM-8678
Recommended:
#14 Light Bulbs (25 pack).......................................................... EM-8627
p. 260
Batteries AA (4 pack)...................................................................... PI-6601
p. 261
Order Information:
Relay..........................................................................CI-6462
Required:
Digital Adapter..............................................PS-2159
PASPORT Interface..................................p. 6-23
253